Burner



FIG. 1 is a right side top, rear perspective view of a burner showing my new design;

FIG. 2 is a left side, top, rear perspective view thereof;

FIG. 3 is a front perspective view thereof;

FIG. 4 is a left side perspective view thereof; and,

FIG. 5 is a right side perspective view thereof. 

The ornamental design for a burner, as shown. 